Audio speaker horn



FIG. 1 is a top perspective view of an audio speaker horn, showing my new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a front elevation view thereof, the rear, left, and right side elevation views being the same;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof.

The broken lines in the figures illustrate the portions of the audio speaker horn and form no part of the claimed design. 

CLAIM The ornamental design for an audio speaker horn, as shown and described. 